This directory contains the following files: 1. README (this file) 2. projectPidHisto.h 3. projectPidHisto.cc 4. anaProjectPidHisto.cc 5. Makefile The projection of the ntuple to histograms is done by the root based class (MakeClass()) which implementation is in projectPidHisto.h and projectPidHisto.cc files. The list of histograms with description can be found in projectPidHisto.h while the condtions under which they are filled can be found in projectPidHisto::Loop() function (projectPidHisto.cc). The anaProjectPidNtuple.cc file conatins main() functions to run the projectPidHisto class. The Makefile to make anaProjectPidHisto executable. Quick Start: 1. Set ROOT enviroment 2. Make anaProjectPidHisto executable make 3. Run anaProjectPidHisto ./anaProjectPidHisto -i [inFileName] -o [outFileName] -e [nEvents] -s [startEvent] or ./anaProjectPidNtuple -i [inFileName] -o [outFileName] Example: inFileName ==> /d/hades/c2c_dst.root outFileName ==> /d/hades/c2c_dst_nt.root nEvents ==> 1000 nEvents ==> 10